Here’s a look at some of the companies the Yahoo Finance team will be watching for you today.

Fannie Mae (FNMA) may need a little government assistance. The mortgage lender is reporting a net loss of $6.5B for its fourth quarter, as a result of President Trump’s tax law. While the loss wasn’t surprising, it will most likely require a $3.7B infusion of taxpayer cash. Fannie Mae has paid $166B back to taxpayers since the 2008 bailout.

McDonald’s (MCD) is axing cheeseburgers from its happy meals. The move comes as Mickey D’s aims to make at least half its happy meals 600 calories or less by 2022. Family trips to McDonald’s make up 30% of all visits to the fast food chain around the world.

Warren Buffett’s Berkshire Hathaway (BRK-A) is moving higher. The holding company bought nearly 19 million ADRs of Teva, bolstering Berkshire’s position in health care. Just last month, Berkshire said it would work with Amazon and JPMorgan Chase to create their own health care company. By the way, Berkshire also bought more Apple stock, surpassing Wells Fargo as its top investment.

Google (GOOGL) will start to block ads it doesn’t deem user friendly. Critics say the plan is self-serving and will allow Google to push its own ads, according to the Wall Street Journal. It’s estimated that $3 out of every $10 spent on digital ads goes to Google, generating over $95B in ad sales last year for the tech titan.